The third-generation Ford Focus (codename DYB) marked a turning point with the 'One Ford' strategy, becoming a truly global model. Recognized for its excellent comfort/handling compromise and dynamic chassis, it benefited from a major facelift in late 2014 (Phase 2) introducing the 'Aston Martin-style' grille, redesigned interior ergonomics (abandoning the button-heavy center console in favor of SYNC 2 then SYNC 3 systems), and new Euro 6 engines. While the diesel engines (TDCi) developed with PSA proved particularly robust and economical, the model's overall reputation was tarnished by the troubles of the dry-clutch PowerShift automatic gearbox and the fragilities of certain EcoBoost petrol engines (wet belt on the 1.0, overheating on the 1.6).
The Ford Focus III is an excellent compact car, particularly brilliant in terms of dynamics. If you are looking for a diesel, it is a top-tier choice: the 1.5 TDCi and 2.0 TDCi blocks (with manual gearbox) are among the most reliable and economical engines of their generation. Phase 2 (post-2014) is highly recommended for its modernized interior (SYNC 3) and improved sound insulation. However, caution is advised for petrol engines: the 1.0 EcoBoost requires meticulous maintenance (wet belt) and dry-clutch PowerShift automatic gearboxes are to be absolutely avoided. Buy a diesel with your eyes closed (with a clear history), but negotiate or avoid poorly maintained small petrol engines.